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Silver 3.5 inch bare hard drive with exposed circuit board and SAS connector

HGST

HGST Ultrastar He8 HUH728080AL4204 8TB 7200 RPM SAS 12Gb/s 3.5" internal hard drive

SKU CH-BB7R-1QPX2

8TB helium-filled 3.5-inch SAS drive with 7200 RPM, 128MB cache and 12Gb/s interface for high-density server storage

  • Total capacity8 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory128 MB
  • 8TB capacity in a standard 3.5-inch form factor
  • Helium-sealed design delivers industry-best Watts-per-TB power efficiency
  • 7200 RPM and 128 MB cache for responsive server workloads
  • SAS 12 Gb/s interface matches next-generation data-centre speeds
  • 2M-hour MTBF rating backs long-term enterprise reliability

Enterprise 8TB helium drive

The HGST Ultrastar He8 HUH728080AL4204 is an 8TB 3.5-inch internal hard drive built on a second-generation helium platform. It spins at 7200 RPM with a 128MB cache and connects through a SAS 12Gb/s interface. The bare drive targets enterprise and data-centre environments where capacity density and power efficiency are paramount.

Suited for high-density arrays, not desktop PCs

This drive fits servers, cloud and hyperscale storage, and distributed file systems such as Ceph and Hadoop that demand high capacity per slot and low watts per terabyte. It is not intended for consumer desktops or workstations that lack SAS controllers or 12Gb/s backplanes, nor for builds needing SATA-only connectivity without an adapter.

8TB capacity with efficient headroom

The helium design delivers 33% more capacity than 6TB air drives while cutting idle power by 23% and improving power efficiency by 44% in watts per terabyte. Average seek time is 8.5ms and average latency 4.16ms, supporting sustained throughput in scale-out deployments. Workloads requiring higher IOPS or sub-millisecond latency will exceed what this mechanical drive can provide.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $205.99
Pricier than about 70% of the 4,938 comparable items (median $107.99).
Total capacity 8 TB
Higher than about 80% of the 2,372 comparable items (median 2 TB).
Price per TB $25.75 per TB
Cheaper than about 88% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameHGST
Product lineUltrastar He8
Model nameHUH728080AL4204 (0F23654)
Total capacity8 TB
Recommended useIdeal for Servers
Performance
Rotational speed7,200 RPM
Average seek time8.5 ms
Mean write time9 ms
Mean latency4.16 ms
Storage
Cache memory128 MB
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Maximum width101.6(+/-0.25)mm
Maximum length147 mm

Questions about this item

Does this 8TB SAS 12Gb/s drive need a SAS backplane or HBA to work in my server?

Yes, the HUH728080AL4204 uses a 12Gb/s SAS interface and must connect to a SAS controller or backplane; it will not operate on a SATA-only port.

Can I mix this helium-filled 7200 RPM drive with older 6TB air-filled drives in the same RAID array?

It fits the same 3.5-inch, 26.1mm-high bay and uses the SAS 12Gb/s interface, so it can share an array, though rebuild times will reflect the 8TB capacity and 8.5ms seek time.

How can I confirm the 128MB cache and 4.16ms average latency are active after installation?

Run the drive manufacturer's diagnostic utility or check SMART attributes; they will report the 128MB cache size and show latency figures consistent with the 4.16ms specification.

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